package main

import (
    "encoding/json"
    "encoding/xml"
    "fmt"
)

type Data struct {
    XMLName    xml.Name `xml:"data" json:"-"`
    PersonList []Person `xml:"person" json:"people"`
}

type Person struct {
    XMLName   xml.Name `xml:"person" json:"-"`
    Firstname string   `xml:"firstname" json:"firstname"`
    Lastname  string   `xml:"lastname" json:"lastname"`
    Address   *Address `xml:"address" json:"address,omitempty"`
}

type Address struct {
    City  string `xml:"city" json:"city,omitempty"`
    State string `xml:"state" json:"state,omitempty"`
}

func main() {
    rawXmlData := "<data><person><firstname>Nic</firstname><lastname>Raboy</lastname><address><city>San Francisco</city><state>CA</state></address></person><person><firstname>Maria</firstname><lastname>Raboy</lastname></person></data>"
    var data Data
    xml.Unmarshal([]byte(rawXmlData), &data)
    jsonData, _ := json.Marshal(data)
    fmt.Println(string(jsonData))
}
